(a) You need to jump start a car. The car battery is as Watts. How many 1.5 V ne
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Question
(a) You need to jump start a car. The car battery is as Watts. How many 1.5 V needs and 0.5 Amp battery you will need to replace the car battery. (5) (b) Is light a wave or a particle? Explain how it can be both? Which experiment showed that light is not a particle? Which experiment showed that light is not a wave? ---(5) (c) The current in an AC power line changes direction 60 times every second and its average value is zero. Explain how is it possible for power to be transmitted in such a system. It appears as if whatever current that goes in will be coming out instantaneously. (5) What is wrong with this argument? What is dispersion? Why is dispersion not seen with a glass plate? Can sound waves be dispersed? During a power outage w it is recommended that you switch your heavy duty devices (e.g. devices which use electric motors like refrigerator or air conditioner) oFF and wait for the power to be back before turning them (5)Explanation / Answer
Power =V*I=1.5*0.5=0.75W
no of batteries needed =150/0.75=200
hence no of batteries needed to jump start the car =200
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